package com.atguigu.rabbitmq.five;

import com.atguigu.rabbitmq.utils.RabbitMqUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.DeliverCallback;

import java.nio.charset.StandardCharsets;

/**
 * 消息接收
 * @author 连志阳
 * @since 2022/2/9
 */
public class ReceiveLogs01 {
    //交换机名称
    public static final String EXCHANGE_NAME = "logs";
    
    public static void main(String[] args) throws Exception {
        Channel channel = RabbitMqUtils.getChannel();
        //声明一个交换机
        channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
        //声明一个队列，临时队列
        /*
        生成一个临时队列，队列的名称是随机的
        当消费者断开与队列的连接时，队列自动删除
         */
        String queueName = channel.queueDeclare().getQueue();
        /*
        绑定交换机与队列
         */
        channel.queueBind(queueName, EXCHANGE_NAME, "");
        System.out.println("等待接收消息，把接收到的消息打印在屏幕上......");
        
        //接收消息
        DeliverCallback deliverCallback = (consumerTag, message) -> {
            System.out.println("ReceiveLogs01控制台打印接收到的消息："
                + new String(message.getBody(), StandardCharsets.UTF_8));
        };
        //消费者取消消息时回调接口
        channel.basicConsume(queueName, true, deliverCallback, consumerTag -> {});
    }
}
